A telescopic resistance pull-up training device

Abstract

The present invention belongs to the technical field of pull-up training, and specifically relates to a telescopic contact pull-up training device, comprising a mounting tube and two rollers, wherein the mounting tube is internally threadedly connected to an inner tube, one end of the inner tube is fixedly connected to a first telescopic column, a second threaded section is installed inside the inner tube, the second threaded section is threadedly connected to a limit plate, a second telescopic rod is rotatably installed on the limit plate, two rollers are rotatably installed on the first telescopic column and the second telescopic rod respectively away from each other, the two rollers are installed with a locking assembly, and an anti-slip sleeve assembly is installed on the circumference of the mounting tube. The present invention can drive the first telescopic column and the second telescopic rod to extend out synchronously by rotating the first telescopic column, so that the installation of the training device is quick and convenient, and at the same time, the present invention can also have the training effect of a crunch wheel, that is, when the first telescopic column and the second telescopic rod are in a storage state, the two rollers rotate freely, and the effect of exercising the abdomen is achieved through the mounting tube and the two freely rotating rollers.

Description

Technical Field

[0001] The invention belongs to the technical field of pull-up training, and in particular relates to a telescopic resistance type pull-up training device. Background Art

[0002] With the improvement of people's living standards, people pay more and more attention to physical exercise and body shaping. In order to facilitate exercise, home fitness equipment is a good choice. Users can exercise at home anytime and anywhere, such as using a telescopic resistance horizontal bar to do pull-ups, so as to exercise the back. Compared with going to the gym, it saves users' time and energy costs, and the equipment occupies a small area, so home fitness equipment is widely used by people;

[0003] However, the pull-up bar in the prior art can only be installed between two walls in a resisting manner, and then the back and hands are exercised by doing pull-ups, and the exercised parts are limited, and thus need to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a telescopic contact type pull-up training device to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A telescopic contact pull-up trainer comprises a mounting tube and two rollers, wherein the mounting tube is threadedly connected to an inner tube via a first threaded section, one end of the inner tube is fixedly connected to a first telescopic column, a second threaded section is installed inside the inner tube, the second threaded section is threadedly connected to a limiting plate, a second telescopic rod is rotatably installed on the limiting plate, and the second telescopic rod is slidably connected to the mounting tube, the second threaded section has an opposite rotation direction to the first threaded section, the two rollers are respectively rotatably installed on the first telescopic column and the second telescopic rod away from each other, the two rollers are respectively installed with locking assemblies with the first telescopic column and the second telescopic rod, and an anti-slip sleeve assembly is installed on the circumference of the mounting tube.

[0007] The locking assembly includes two symmetrical hinged rods, and the roller is symmetrically provided with a mounting groove rotatably connected to the hinged rod on one side facing the mounting cylinder, an electric telescopic rod is installed inside the hinged rod, a cylinder is rotatably installed on the output end of the electric telescopic rod, a rectangular block is rotatably connected to the upper end of the cylinder, a T-slot is provided inside the rectangular block, a first conical tooth fixedly installed with the cylinder is rotatably installed inside the T-slot, an internally threaded cylinder is symmetrically rotatably connected inside the T-slot, a second conical tooth meshing with the first conical tooth is installed on the side of the internally threaded cylinder close to the first conical tooth, a plug column slidably connected to the rectangular block is threaded inside the internally threaded cylinder, the first telescopic column and the second telescopic rod are symmetrically provided with rectangular grooves matching the rectangular block, and a plurality of sockets matching the plug columns are provided inside the rectangular groove.

[0008] A limiting block matching the rectangular groove is fixedly installed on one side of the installation tube that is slidably connected to the second telescopic rod.

[0009] A plurality of V-shaped anti-skid strips are annularly installed on the side away from each other of the two rollers, and the protrusions of the V-shaped anti-skid strips face the center of the rollers. An arc groove connected to the installation groove is opened on the side close to each other of the rollers.

[0010] The anti-slip sleeve assembly includes two symmetrically installed anti-slip sleeves, and anti-slip pads are installed on the outside of the two anti-slip sleeves. The anti-slip sleeves are symmetrically fixed with fixing plates that are slidably connected to the rectangular grooves. The fixing plates are provided with through holes that match the plug posts, and locking pieces are installed between the two anti-slip sleeves and the mounting tubes.

[0011] The locking piece includes a fixed block fixedly connected to the mounting tube, a connecting block is installed on one side of the anti-slip sleeves close to each other, a U-shaped slider is slidably connected inside the connecting block, a spring is installed between the U-shaped slider and the connecting block, the U-shaped slider extends out of the connecting block and is fixedly connected to a protrusion, and the fixed block is provided with a through groove matching the protrusion.

[0012] The through slot is arranged to penetrate from left to right.

[0013] The left and right sides of the rectangular block are chamfered, and a limiting groove is provided on one side of the installation groove close to the installation tube.

[0014] The present invention can drive the first telescopic column and the second telescopic rod to extend outward synchronously by rotating the first telescopic column, so that the trainer can be installed quickly and quickly. At the same time, the present invention can also have the training effect of the abdominal crunch wheel, that is, when the first telescopic column and the second telescopic rod are in the storage state, the two rollers can rotate freely, and then the effect of exercising the abdomen is achieved through the installation tube and the two freely rotating rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of a telescopic contact type pull-up training device of the present invention;

[0017] Figure 2 It is a schematic diagram of the first cross-sectional structure of a telescopic contact type pull-up training device of the present invention;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 5 It is a second cross-sectional structural schematic diagram of a telescopic contact type pull-up training device of the present invention;

[0021] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0022] Figure 7 It is a schematic diagram of the third cross-sectional structure of a telescopic contact type pull-up training device of the present invention;

[0023] Figure 8 It is a schematic diagram of the fourth cross-sectional structure of a telescopic contact type pull-up training device of the present invention;

[0024] Fig. 9 It is a fifth cross-sectional structural schematic diagram of a telescopic contact type pull-up training device of the present invention;

[0025] Fig.10 for Figure 7 Schematic diagram of the enlarged structure at D in the middle.

[0026] The main component symbols are described as follows:

[0027] Mounting cylinder 1, first threaded section 11, inner cylinder 12, first telescopic column 13, second threaded section 14, limiting plate 15, second telescopic rod 16, roller 2, hinged rod 21, electric telescopic rod 22, cylinder 23, rectangular block 24, first conical teeth 25, inner threaded cylinder 26, second conical teeth 27, plug column 28, rectangular groove 29, limiting block 30, V-shaped anti-slip strip 31, anti-slip sleeve 32, fixing plate 33, fixing block 34, connecting block 35, U-shaped slider 36, spring 37, and protrusion 38. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1: Figure 1-9 As shown, a telescopic contact pull-up trainer of the present invention comprises a mounting tube 1 and two rollers 2, wherein the mounting tube 1 is threadedly connected with an inner tube 12 via a first threaded section 11, a first telescopic column 13 is fixedly connected to one end of the inner tube 12, a second threaded section 14 is mounted inside the inner tube 12, the second threaded section 14 is threadedly connected with a limiting plate 15, a second telescopic rod 16 is rotatably mounted on the limiting plate 15, and the second telescopic rod 16 is slidably connected to the mounting tube 1, the second threaded section 14 is in opposite rotation direction to the first threaded section 11, the two rollers 2 are respectively rotatably mounted on one side of the first telescopic column 13 and the second telescopic rod 16 away from each other, the two rollers 2 are respectively mounted with locking assemblies on the first telescopic column 13 and the second telescopic rod 16, and an anti-slip sleeve assembly is mounted on the periphery of the mounting tube 1.

[0030] In the initial state, the first telescopic column 13 and the second telescopic rod 16 are both located inside the mounting tube 1, so that the two rollers 2 are in a position close to each other. At this time, the locking assembly is in an unconnected state, so that the two rollers 2 are in a rotating state. In this way, the user places the two rollers 2 horizontally on the ground and then holds the mounting tube 1 with the back of the hand facing up to drive the mounting tube 1 to move forward and backward, so that the rollers 2 rotate and follow the forward and backward movement of the mounting tube 1 during the forward and backward movement of the mounting tube 1. The anti-slip sleeve assembly can increase the friction and comfort between the user's hand and the mounting tube 1, improve the user's hand grip and exercise effect, and at the same time, in this state, the trainer is in the smallest volume state for easy storage.

[0031] When pull-ups are needed, the first telescopic column 13 is driven to rotate while the mounting tube 1 is fixed, thereby driving the inner tube 12 to rotate and spirally extend outward with the first threaded section 11. At the same time, since the first threaded section 11 and the second threaded section 14 rotate in opposite directions, and the limiting plate 15 is threadedly connected to the second threaded section 14, the inner tube 12 rotates forward to extend the first telescopic column 13 while the second threaded section 14 rotates to drive the limiting plate 15 threadedly connected thereto to move. Since the limiting plate 15 is fixedly installed with the second telescopic rod 16 and the second telescopic rod 16 can only be slidably connected to the mounting tube 1, the positive rotation of the inner tube 12 will drive the limiting plate 15 to rotate forward when the mounting tube 1 is fixed. The plate 15 moves in a direction away from the first telescopic column 13, thereby extending the second telescopic rod 16 out of the interior of the mounting tube 1, and the pitch of the second threaded segment 14 is twice the pitch of the first threaded segment 11, so that the first telescopic column 13 and the second telescopic rod 16 are extended by the same distance, until the two rollers 2 move away from each other and abut against the wall and stop rotating. At this time, the two rollers 2 are fixed to the first telescopic column 13 and the second telescopic rod 16 by a locking assembly. Since the first telescopic column 13 and the second telescopic rod 16 can no longer move away from each other under the abutment of the wall, the rollers 2 are fixed by the locking assembly to prevent the rollers 2 from rotating relative to the mounting tube 1.

[0032] The present invention can drive the first telescopic column and the second telescopic rod to extend outward synchronously by rotating the first telescopic column, so that the trainer can be installed quickly and quickly. At the same time, the present invention can also have the training effect of the abdominal crunch wheel, that is, when the first telescopic column and the second telescopic rod are in the storage state, the two rollers can rotate freely, and then the effect of exercising the abdomen is achieved through the installation tube and the two freely rotating rollers.

[0033] Embodiment 2: Further improvement is made on the basis of Embodiment 1, the locking assembly includes two symmetrical hinged rods 21, the roller 2 is symmetrically provided with mounting grooves rotatably connected to the hinged rod 21 on one side facing the mounting cylinder 1, an electric telescopic rod 22 is installed inside the hinged rod 21, a cylinder 23 is rotatably installed on the output end of the electric telescopic rod 22, a rectangular block 24 is rotatably connected to the upper end of the cylinder 23, a T-slot is provided inside the rectangular block 24, a first conical tooth 25 fixedly installed with the cylinder 23 is rotatably installed inside the T-slot, an internal threaded cylinder 26 is symmetrically rotatably connected inside the T-slot, a second conical tooth 27 meshing with the first conical tooth 25 is installed on the side of the internal threaded cylinder 26 close to the first conical tooth 25, a plug column 28 slidably connected to the rectangular block 24 is threaded inside the internal threaded cylinder 26, the first telescopic column 13 and the second telescopic rod 16 are symmetrically provided with rectangular grooves 29 matching the rectangular block 24, and a plurality of sockets matching the plug column 28 are provided inside the rectangular groove 29.

[0034] In the initial state, that is, when the trainer is in the storage state, the two electric telescopic rods 22 are in a retracted state, so that the cylinder 23 is stored inside the two hinged rods 21, and the hinged rod 21 is vertically stored inside the installation groove, so that the roller 2 and the first telescopic column 13 or the second telescopic rod 16 can rotate freely, so as to facilitate the user to perform crunch training. When the trainer is installed between two walls, the two rollers 2 abut against the wall, and then the hinged rod 21 is rotated to extend out of the installation groove and the electric telescopic rod 22 is started to extend the cylinder 23, so that the rectangular block 24 is embedded in the rectangular groove 29 and the plug column 28 coincides with the socket. Since the rectangular groove 29 fits with the rectangular block 24, the rectangular groove 29 will limit the rectangular block 24 to prevent the rectangular block 24 from rotating. The rotating cylinder 23 drives the first conical tooth 25 to rotate. Since the first conical tooth 25 is meshed with the two second conical teeth 27, the rotating cylinder 23 will drive the two second conical teeth 27 to rotate, and then the internal threaded tube 26 is threadedly connected to the plug post 28, and through the sliding limit with the rectangular block 24, the plug post 28 is extended outward and inserted into the inside of the socket under the rotation of the internal threaded tube 26, that is, the locking assembly, the roller 2 and the first telescopic column 13 or the second telescopic rod 16 form a triangular structure, which can not only improve the stability of the first telescopic column 13 and the second telescopic rod 16, but also lock the roller 2 with the first telescopic column 13 or the second telescopic rod 16 to prevent the roller 2 from rotating relative to the first telescopic column 13 or the second telescopic rod 16.

[0035] A stopper 30 matching the rectangular groove 29 is fixedly installed on one side of the installation tube 1 and the second telescopic rod 16 for sliding connection. The second telescopic rod 16 can only slide axially relative to the installation tube 1 through the stopper 30 and the rectangular groove 29.

[0036] A plurality of V-shaped anti-skid strips 31 are installed in a ring shape on the side of the two rollers 2 that are away from each other, and the protrusions of the plurality of V-shaped anti-skid strips 31 face the center of the roller 2. An arc groove connected to the installation groove is provided on the side of the rollers 2 that are close to each other. The V-shaped anti-skid strips 31 can increase the friction between the rollers 2 and the wall surface and improve the stability of the installation of the training device, while the arc groove can easily drive the hinge rod 21 to rotate.

[0037] The anti-slip sleeve assembly includes two symmetrically installed anti-slip sleeves 32, and anti-slip pads are installed on the outside of the two anti-slip sleeves 32. The anti-slip sleeves 32 are symmetrically fixed with a fixing plate 33 that is slidably connected to the rectangular groove 29. The fixing plate 33 is provided with a through hole that matches the plug column 28. Locking parts are installed between the two anti-slip sleeves 32 and the installation tube 1. In the initial state, the two rollers 2 abut against the two anti-slip sleeves 32 on both sides, and then the two anti-slip sleeves 32 are fixedly installed on the outside of the mounting tube 1 through the locking piece, so that the anti-slip sleeve 32 is fixed relative to the mounting tube 1, and at the same time, the fixing plate 33 is slidably connected inside the rectangular groove 29. If the anti-slip sleeve 32 is fixed relative to the mounting tube 1, and the fixing plate 33 displays the rectangular groove 29 of the first telescopic column 13 and the second telescopic rod 16, the first telescopic column 13 and the second telescopic rod 16 move synchronously with the anti-slip sleeve 32, that is, the first telescopic column 13 and the second telescopic rod 16 are also fixed relative to the mounting tube 1, that is, at this time the first telescopic column 13 and the inner tube 12 cannot rotate relative to the mounting tube 1, thereby locking the entire trainer, and the anti-slip pad can increase the friction and comfort of the user's hand and the anti-slip sleeve 32.

[0038] The locking member includes a fixing block 34 fixedly connected to the mounting tube 1, a connecting block 35 is installed on one side of the anti-slip sleeve 32 close to each other, a U-shaped slider 36 is slidably connected inside the connecting block 35, a spring 37 is installed between the U-shaped slider 36 and the connecting block 35, the U-shaped slider 36 extends out of the connecting block 34 and is fixedly connected to a protrusion 38, and the fixing block 34 is provided with a through groove matching the protrusion 38.

[0039] When locked, the protrusion 38 is located inside the through slot. At this time, the spring 37 gives the protrusion 38 a force to move outward, so that the protrusion 38 is stably inserted in the through slot. When unlocking is required, the U-shaped slider 36 is driven to leak out of the part outside the connecting block 35, and then the U-shaped slider 36 is driven to overcome the rebound force of the spring 37 and move toward the installation tube 1, so that the protrusion 38 is located inside the through slot, and then the anti-slip sleeve 32 is driven away from the fixing block 34 to make the protrusion 38 away from the through slot, and the unlocking is completed.

[0040] The through slots are arranged to penetrate left and right. The through slots arranged to penetrate left and right can play the role of hooks, so that the two through slots cooperate with each other to hang other fitness equipment, such as auxiliary rings, cantilever belts, training chairs, tension ropes and other portable equipment.

[0041] The left and right sides of the rectangular block 24 are chamfered, and a limiting groove is provided on the side of the installation groove close to the installation tube 1.

[0042] After the hinged rod 21 is placed in the installation slot, the rectangular block 24 can be inserted into the limiting slot under the action of the electric telescopic rod 22 to prevent the hinged rod 21 from rotating out of the installation slot, thereby limiting the hinged rod 21.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A telescopic contact pull-up training device, comprising a mounting tube and two rollers, characterized in that: The installation cylinder is threadedly connected with an inner cylinder through a first threaded section, one end of the inner cylinder is fixedly connected with a first telescopic column, a second threaded section is installed inside the inner cylinder, the second threaded section is threadedly connected with a limit plate, a second telescopic rod is rotatably installed on the limit plate, and the second telescopic rod is slidably connected to the installation cylinder, the second threaded section and the first threaded section have opposite rotation directions, the two rollers are rotatably installed on the first telescopic column and the second telescopic rod away from each other, the two rollers are respectively installed with locking assemblies on the first telescopic column and the second telescopic rod, and an anti-slip sleeve assembly is installed on the circumference of the installation cylinder; The locking assembly includes two symmetrical hinged rods, and the roller is symmetrically provided with a mounting groove rotatably connected to the hinged rod on one side facing the mounting cylinder, an electric telescopic rod is installed inside the hinged rod, a cylinder is rotatably installed on the output end of the electric telescopic rod, a rectangular block is rotatably connected to the upper end of the cylinder, a T-slot is provided inside the rectangular block, a first conical tooth fixedly installed with the cylinder is rotatably installed inside the T-slot, an internally threaded cylinder is symmetrically rotatably connected inside the T-slot, a second conical tooth meshing with the first conical tooth is installed on the side of the internally threaded cylinder close to the first conical tooth, a plug column slidably connected to the rectangular block is threaded inside the internally threaded cylinder, the first telescopic column and the second telescopic rod are symmetrically provided with rectangular grooves matching the rectangular block, and a plurality of sockets matching the plug columns are provided inside the rectangular groove.

2. A telescopic contact pull-up training device according to claim 1, characterized in that: A limiting block matching the rectangular groove is fixedly installed on one side of the installation tube that is slidably connected to the second telescopic rod.

3. The telescopic contact pull-up training device according to claim 1, characterized in that: A plurality of V-shaped anti-skid strips are annularly installed on the side away from each other of the two rollers, and the protrusions of the V-shaped anti-skid strips face the center of the rollers. An arc groove connected to the installation groove is opened on the side close to each other of the rollers.

4. The telescopic contact pull-up training device according to claim 1, characterized in that: The anti-slip sleeve assembly includes two symmetrically installed anti-slip sleeves, and anti-slip pads are installed on the outside of the two anti-slip sleeves. The anti-slip sleeves are symmetrically fixed with fixing plates that are slidably connected to the rectangular grooves. The fixing plates are provided with through holes that match the plug posts, and locking pieces are installed between the two anti-slip sleeves and the mounting tubes.

5. The telescopic contact pull-up training device according to claim 4, characterized in that: The locking piece includes a fixed block fixedly connected to the mounting tube, a connecting block is installed on one side of the anti-slip sleeves close to each other, a U-shaped slider is slidably connected inside the connecting block, a spring is installed between the U-shaped slider and the connecting block, the U-shaped slider extends out of the connecting block and is fixedly connected to a protrusion, and the fixed block is provided with a through groove matching the protrusion.

6. The telescopic contact pull-up training device according to claim 5, characterized in that: The through slot is arranged to penetrate from left to right.

7. The telescopic contact pull-up training device according to claim 1, characterized in that: The left and right sides of the rectangular block are chamfered, and a limiting groove is provided on the side of the installation groove close to the installation tube.

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